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Teat in Irish (Sine): Meaning, Pronunciation, Usage

‘sine’ also means: nipple

The Irish for teat is sine, a feminine noun (plural siní).
Updated October 2026Report a mistake

How to say “teat” in Irish

Irish:
sine
English:
teat, nipple
Word type:
noun
Gender:
feminine, fourth declension
Pronunciation:
“SHIN-uh”  /ˈʃɪnʲə/
Various forms
Plural:
siní (teats)
Genitive singular:
sine, na sine (e.g. barr na sine, the tip of the teat)
Genitive plural:
siní, na siní (e.g. líon na siní, the number of teats)

What does “sine” mean?

“Sine” has two alternative meanings. The most common comes first.

teat
The part of a female mammal's udder or breast from which milk is sucked, especially on a cow or other animal.Also: nipple, dug, udder teat.
1 other meaning: nipple
2nipple
A small projection or nozzle shaped like a teat, such as the teat on a baby's bottle.Also: bottle teat, nozzle.

Other Irish words for teat: dide (teat)

“Sine” with the article

The plural of teat in Irish is siní. Here is sine after the article (an t-alt), in the singular and the plural.

an tsine
the teat
Feminine nouns take t before s after an
na siní
the teats
Plural: no change after na

“Sine” in a sentence: Irish examples

Common Irish sentences using sine, the Irish word for teat.

Bhí sine amháin den bhó tinn.
One of the cow's teats was sore.
Ghlan sé an tsine sular bhligh sé í.
He cleaned the teat before he milked her.
Tá ceithre shine ar úth na bó.
A cow's udder has four teats.
Nigh na siní go cúramach roimh an mblí.
Wash the teats carefully before milking.
Chuir sí sine nua ar bhuidéal an linbh.
She put a new teat on the baby's bottle.
Tá poll beag i mbarr na sine.
There is a small hole in the tip of the teat.
Bhí an t-uan ag diúl ar shine na caorach.
The lamb was sucking at the ewe's teat.

Other nouns in Irish

More everyday Irish nouns to learn next.

Teat in Irish: frequently asked questions

What is the Irish for teat?

The Irish for teat is sine (pronounced “SHIN-uh”). It’s a feminine noun and the plural is siní. Depending on context it can also mean nipple.

How do you pronounce sine in Irish?

Sine is said like “SHIN-uh” (IPA /ˈʃɪnʲə/).

What is the plural of teat in Irish?

The plural of sine is siní; with the article, na siní means “the teats”. The genitive plural is siní, as in líon na siní (the number of teats).

Does sine have more than one meaning?

Yes. Sine can mean teat or nipple, depending on context; the first is the most common.

Why does sine change to shine?

After words like mo (my) and do (your) the first letter is lenited: mo shine. After ár (our) it stays ár sine, because s does not take eclipsis.

What is the difference between 'sine' and 'cíoch'?

'Cíoch' usually means the breast, while 'sine' is the teat or nipple itself, and is the normal word for a cow's teat.

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